package com.nowcoder.community.controller;/**
 * @description:
 * @Author HP
 * @create 2021/12/15 19:04
 */

import com.nowcoder.community.annotation.LoginRequired;
import com.nowcoder.community.entity.User;
import com.nowcoder.community.service.FollowService;
import com.nowcoder.community.service.LikeService;
import com.nowcoder.community.service.UserService;
import com.nowcoder.community.util.CommunityConstant;
import com.nowcoder.community.util.CommunityUtil;
import com.nowcoder.community.util.HostHolder;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

/**
 * @author HP
 * @create 2021-12-15 19:04
 * @desc 与用户相关的controller
 **/
@Controller
@RequestMapping(path = "/user")
public class UserController implements CommunityConstant {

    private Logger logger= LoggerFactory.getLogger(UserController.class);

    @Value("${community.path.domain}")
    private String domian;

    @Value("${community.path.upload}")
    private String uploadPath;

    @Value("${server.servlet.context-path}")
    private String contextPath;

    @Autowired
    private HostHolder hostHolder;

    @Autowired
    private UserService userService;

    @Autowired
    private LikeService likeService;

    @Autowired
    private FollowService followService;

    @LoginRequired
    @RequestMapping(path = "/setting")
    public String getSettingPage(){
        return "/site/setting";
    }

    @LoginRequired
    @RequestMapping(path = "/upload",method = RequestMethod.POST)
    public String uploadHeader(MultipartFile headerImage,Model model){
        if (headerImage==null){
            model.addAttribute("error","您还没有选择图片！");
            return "/site/setting";
        }

        String fileName= headerImage.getOriginalFilename();
        String suffix=fileName.substring(fileName.lastIndexOf("."));
        if (StringUtils.isBlank(suffix)){
            model.addAttribute("error","请上传正确正确格式的图片");
            return "site/setting";
        }
        //生成随机文件名
        fileName= CommunityUtil.generateUUID()+suffix;
        //确定文件存放路径
        File dest=new File(uploadPath+"/"+fileName);
        try {
            headerImage.transferTo(dest);
        } catch (IOException e) {
            logger.error("上传文件失败"+e.getMessage());
            throw new RuntimeException("上传文件失败，服务器发生异常",e);
        }
        //更新当前用户的头像的路径(web访问路径)
        //http://localhost:8080/community/user/header/xxx.png
        String headUrl=domian+contextPath+"/user/header/"+fileName;
        User user= hostHolder.getUser();
        userService.updateHeader(user.getId(),headUrl);
        return "redirect:/index";
    }

    @RequestMapping(path = "/header/{fileName}",method = RequestMethod.GET)
    public void getHeader(@PathVariable("fileName")String fileName, HttpServletResponse response){
        // 服务器存放路径
        fileName=uploadPath+"/"+fileName;
        // 文件后缀
        String suffix=fileName.substring(fileName.lastIndexOf("."));
        // 响应图片
        response.setContentType("image/"+suffix);
        try (
                OutputStream os= response.getOutputStream();
                FileInputStream fis=new FileInputStream(fileName);
                ){
            byte[] buffer=new byte[2048];
            int b=0;
            while((b= fis.read(buffer))!=-1){
                os.write(buffer,0,b);
            }
        } catch (IOException e) {
            logger.error("获取图片失败:"+e.getMessage());
        }
    }

    @RequestMapping(path = "/changePassword",method = RequestMethod.POST)
    public String changePassword(Model model,String oldPassword,String newPassword,String passwordConfirm){
        User user= hostHolder.getUser();
        Map<String,Object>map= userService.changePassword(user.getId(),oldPassword,newPassword,passwordConfirm);
        if (map==null|| map.isEmpty()){
            return "redirect:/index";
        }else {
            model.addAttribute("newPasswordMsg",map.get("newPasswordMsg"));
            model.addAttribute("oldPasswordMsg",map.get("oldPasswordMsg"));
            model.addAttribute("passwordConfirmMsg",map.get("passwordConfirmMsg"));
            return "/site/setting";
        }
    }

    // 个人主页
    @RequestMapping(path = "/profile/{userId}", method = RequestMethod.GET)
    public String getProfilePage(@PathVariable("userId") int userId, Model model) {
        User user = userService.findUserById(userId);
        if (user == null) {
            throw new RuntimeException("该用户不存在!");
        }

        // 用户
        model.addAttribute("user", user);
        // 点赞数量
        int likeCount = likeService.findUserLikeCount(userId);
        model.addAttribute("likeCount", likeCount);

        // 关注数量
        long followeeCount = followService.findFolloweeCount(userId, ENTITY_TYPE_USER);
        model.addAttribute("followeeCount", followeeCount);
        // 粉丝数量
        long followerCount = followService.findFollowerCount(ENTITY_TYPE_USER, userId);
        model.addAttribute("followerCount", followerCount);
        // 是否已关注
        boolean hasFollowed = false;
        if (hostHolder.getUser() != null) {
            hasFollowed = followService.hasFollowed(hostHolder.getUser().getId(), ENTITY_TYPE_USER, userId);
        }
        model.addAttribute("hasFollowed", hasFollowed);

        return "/site/profile";
    }



}
